The storyline of Fundi-mentals revolves around the lives of two Fundis (handymen), Joseph (Gerald Langiri) and his assistant Moses (Charlie Karumi) who like to think of themselves as the best Fundis in Kinoo estate despite their unorthodox methods of fixing things. The entry of a new multinational service company offering superior and more affordable services throws all this in jeopardy. To avoid going out of business, they introduce to their female customers a new type of Ex-press service with hilarious consequences.